Search found 973 matches

by jb
25 Sep 2020, 9:50pm
Forum: Bikes & Bits – Technical section
Topic: Broken chain
Replies: 11
Views: 502

Re: Broken chain

I recently stopped for a cyclist who was stranded with a derailleur that had been ripped off and the hanger was bent. He was in the process of calling for assistance. I offered to make his bike operable again by making it single speed. This was something I think that had never occurred to him and wa...
by jb
25 Sep 2020, 9:23pm
Forum: Bikes & Bits – Technical section
Topic: Dynahub lamp recommendations
Replies: 35
Views: 775

Re: Dynahub lamp recommendations

What I mean is that different people will have different ideas about what light distribution is best for them. I.E. off road requires lighting above as well as below, but road riding prefers the road to have the most illumination and slight illumination to the sides. But between there are many diffe...
by jb
25 Sep 2020, 7:37pm
Forum: Bikes & Bits – Technical section
Topic: Dynahub lamp recommendations
Replies: 35
Views: 775

Re: Dynahub lamp recommendations

I imagine a competent electrical engineer could work out the maximum lumins you could theoretically get from a standard hub generator, but how you distribute that light via the lens/reflector will always be subjective.
by jb
25 Sep 2020, 9:00am
Forum: Bikes & Bits – Technical section
Topic: Dynamo Headlight - Does it Still Work?
Replies: 28
Views: 729

Re: Dynamo Headlight - Does it Still Work?

You were quick, I rectified that blooper fairly sharp. :D
by jb
25 Sep 2020, 8:46am
Forum: Bikes & Bits – Technical section
Topic: Dynamo Headlight - Does it Still Work?
Replies: 28
Views: 729

Re: Dynamo Headlight - Does it Still Work?

Hi All, Lastly, just a thought. Is it just us cyclist who keep things as 'essentials spares' even though it's old technology and you'll probably never use it again, but you want to keep it 'just in case', or is it just me. Its always a wrench to chuck out anything that still has the smallest amount...
by jb
22 Sep 2020, 8:45am
Forum: Bikes & Bits – Technical section
Topic: Dynamo Headlight - Does it Still Work?
Replies: 28
Views: 729

Re: Dynamo Headlight - Does it Still Work?

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I hope that bar bell weight has been properly balanced. :)
by jb
20 Sep 2020, 8:20pm
Forum: Bikes & Bits – Technical section
Topic: Shimano Alfine 11 - Longer term reliability
Replies: 790
Views: 165504

Re: Shimano Alfine 11 - Longer term reliability

I'm considering to convert my Kona Unit singlespeed to Alfine 11. I've heard some opinions that the shifting mechanism of A11 is much more sensitive to the cable tension (compared with A8). Is that all true for the 2nd get A11 (the S7000-11 model which refreshed the original S700 in 2016). If it is...
by jb
14 Sep 2020, 10:35am
Forum: Bikes & Bits – Technical section
Topic: Disc Brake Pads
Replies: 26
Views: 620

Re: Disc Brake Pads

Sintered pads can squeal a lot on Road bikes. They work best in the mud and wet and stuff. If its a solid fixing you might get away with it.

Organic or fibre are better for stopping & your sanity, you just have to replace them more often.
by jb
13 Sep 2020, 10:16pm
Forum: Bikes & Bits – Technical section
Topic: AW axle bolts keep coming loose
Replies: 25
Views: 783

Re: AW axle bolts keep coming loose

IMG-20200913-WA0000.jpeg
Muddy Fox rides again.
Well, securing the non drive side stopped the problem it seems. A good ride around the Trough of Bowland failed to loosen anything. Unfortunately the gearings a little low on the flats but you can't have everything. :)
by jb
12 Sep 2020, 11:31pm
Forum: Bikes & Bits – Technical section
Topic: How to remove a freewheel...
Replies: 8
Views: 329

Re: How to remove a freewheel...

Wheel it's free advise
by jb
11 Sep 2020, 12:23pm
Forum: Bikes & Bits – Technical section
Topic: Short legs, long cranks, Dutch riding position.
Replies: 21
Views: 544

Re: Short legs, long cranks, Dutch riding position.

You can impart force to the crank but you don't increase the leverage (crank length) with either wood blocks or platform shoes.
by jb
11 Sep 2020, 11:48am
Forum: Bikes & Bits – Technical section
Topic: Short legs, long cranks, Dutch riding position.
Replies: 21
Views: 544

Re: Short legs, long cranks, Dutch riding position.

Would not worry about crank-length.A difference of 5mm is minimal when a slice of bread is about 7mm .You can make up difference by adding an extra sole to your shoes.If you were in T de France might be worth it but given your choice of bikes this seems unlikely. Thicker soles alter the point of ro...
by jb
11 Sep 2020, 10:06am
Forum: Bikes & Bits – Technical section
Topic: Chain Splitter
Replies: 14
Views: 519

Re: Chain Splitter

I throw away the tommy bar and use an allen key (I prefer to carry loose ones). Its longer & I save the weight of a whole tommy bar.
by jb
11 Sep 2020, 9:56am
Forum: Bikes & Bits – Technical section
Topic: Hub servicing - degreaser?
Replies: 35
Views: 900

Re: Hub servicing - degreaser?

The one thing that is worth degreasing is the axle screw thread. Screwing the cone back into place can cause it to snowplough contaminated grease out of the thread and push it into the bearing if your not careful (you only need one spec of grit to give the bearing a rough feel).
by jb
11 Sep 2020, 8:24am
Forum: Bikes & Bits – Technical section
Topic: Short legs, long cranks, Dutch riding position.
Replies: 21
Views: 544

Re: Short legs, long cranks, Dutch riding position.

As Above, also, if when sat on the saddle with your leg stretched out straight you can put the flat of your shoe heel on the pedal when its at its lowest point - and there is enough adjustment in the seat post to allow this - then if the cranks were too long it would feel like your knees were coming...